Fan clutch

Fireman

 
Joined
Sep 5, 2003
Messages
5,451
Location
Iowa Park. TX
How tight should a fan clutch tighten up when it gets hot? Put a new one on my Pig (SBC) and let it get up to 220 deg and it felt just like it did when it was cool. You could turn it fairly easily. Do they make different ones that ar activated at different temps? The one on my diesel come on at 210 and you can hear/feel the difference. Thanks! :flamingo: :beer:
 

brian

SILVER Star
 
 
Joined
Feb 7, 2003
Messages
9,231
Location
lebanon,pa
it should lock up enough to spin the fan, don't think in fact pretty sure is not a 100% lock up but you should be able to feel the difference and you WILL be able to hear when(if) it engages.
 

65swb45

Elder Statesman
Supporting Vendor
 
Joined
Apr 14, 2004
Messages
24,670
Location
818-953-9230
Back when I used to get my K5 serviced at a local shop, the mechanic there told me he'd sworn off ALL aftermarket fan clutches because of weak engagement issues that ended up biting him in the butt on come-back jobs. I remember him telling me what a genuine GM clutch went for and I just opted for a clutch converter to run my stock fan direct drive.

Mark W has said basically the same thing about the Toyota clutches, and I agree with him on those.

:)
 
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